Comment 1 for bug 1742102

We discussed this a bit in IRC, and this is a failure after we've created the port and when we go to plug the VIF for the instance, that fails. Neutron doesn't send any information with the network-vif-plugged event, just that it failed.

Are you able to trace the vif plug operation on the neutron side and see what specific error resulted in the vif plug failing?

On the nova side, you should see something in the logs about a network-vif-plugged event for instance 80e4fb95-da3a-4725-9bb4-9cbb514ebcb1 and you should be able to see the request ID in the request from neutron, and trace that back to the failure on the neutron side that generated the call to nova.